• Adobe After Effects Expressions

  ae scripting

  Posted by Kay Bader on July 12, 2008 at 4:57 pm

  hello,

  i am trying to convert a video effect i wrote in processing (java-based) to after effects.

  i dont know what after effects scripting is capable of, since i found it to be very bad documented.

  here is a list of the things i need after effects script to do in order to get my effect working:

  – detect and return the color of a specified pixel
  – detect if a specified pixel is alpha channel
  – draw lines with a function like this: line(startX,startY,endX,endY)

  are those things possible?

  i guess there might be a way to work around this line stuff with the addLayer function, but that would be pretty unelegant, i think.

  if anyone knows a solution for any of the listed issues would be great

  thank you

  Dan Ebberts replied 18 years, 1 month ago 2 Members · 1 Reply
• 1 Reply

• 

  Dan Ebberts

  July 12, 2008 at 5:19 pm

  To get at a pixel’s color and alpha data, you’d have to have your script apply the sampleImage() expression to a layer and then have the script read the results.

  For the drawing part, your script could create a mask/path and then apply the Stroke effect to it.

  Dan

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